Knee brace



FIG. 1 is a top, front, left perspective view, with both fasteners fastened, of a knee brace showing my design therefor;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof, the left side being the mirror image thereof;

FIG. 5 is a top view thereof, the bottom view being the mirror image thereof; and,

FIG. 6 is a top, front, left perspective view thereof, with the left fastener unfastened. 

CLAIM The ornamental design for a knee brace, as shown and described. 